74. What does the underlined word “survive” mean?

A. continue to live after　　　　　　　　　　　　　　 B. be able to finish

C. miss the chance of　　　　　　　　　　　　　　　　 D. give up

73. The worst thing about African dust storm is ______.

A. the heat they give off　　　　　　　　　　　　　　　　　 B. the distance they cover

C. the microorganisms they contain　　　 　　　 D. the time they last

72. Which statement about African dust storms is TRUE?

A. They form in the north of Africa and move eastwards.

B. They form in the north of Africa and move westwards.

C. They settle in South Africa from February to April.

D. It takes over a week for them to cross the Atlantic Ocean.

71. How many kinds of medicine can be taken by children of seven years old?

A. Two kinds. 　　　　　　　　　 　　　　　　　　　　 B. Three kinds.

C. None.　　　　　　　　　　　 　　 　　　　　　　 D. Four kinds.

E

Researchers in the United States say dust clouds from dry African deserts may be a threat to the environment and human health. They say the dust may contain many small organisms(有机物) that could be dangerous to some people.

Each year, huge dust storms form in the Sahara and Sahel deserts of northern Africa. Winds carry the dust across the Atlantic Ocean. The movement of dust across the Atlantic Ocean has been increasing in recent years because of longer periods without rain in Africa.

From February to April, the dust settles in South America. From June to October, the winds change and transport the dust to North America, Central America and the Caribbean(加勒比海地区). The dust clouds travel several thousand meters above sea level. It takes five to seven days for the dust to cross the Atlantic Ocean.

Researchers have long known that the dust clouds could travel long distances. But they thought few microorganisms could survive the trip because of damaging ultraviolet radiation(紫外线) from the sun. Researchers now believe that the dust clouds block enough of the light to protect viruses, bacteria, and fungi in the dust.

Researchers say these microorganisms may be a health risk to some people. About half the bacteria and fungi that survive the trip from Africa are known to cause disease in people or plants.

More than half of the dust that reaches the United States settles in the state of Florida. For many years, it has caused the skies there to turn red. Now researchers say there may be a link between the dust storms and increased health risks in Florida. They believe the dust causes higher rates of asthma, allergies, and other breathing problems in people there. The dust also has been linked to a large increase in lung problems in at least one Caribbean nation.

70. When an adult has a cold, he had better __________.

A. have as many as fifteen pills a day　 　　　　　　 B. have twice a day

C. have four times a day　　　　　　　　 　　　 　　　 D. have nine pills a day

69. Obviously a kind of medicine mentioned above isn’t proper for ________, judging from the information.

A. children over twelve years old　　　　 　 　　　 B. some adults of 18 years old

C. some old persons with heart attack　 　　　　　　 D. neither adults nor children

68. If a little child under six has a fever, it’s suggested that he ________.

A. take two tablets before sleep　　　　 　 　　　 B. stop to take another pill

C. take one tablet before sleep　　　　　 　 　　　 D. go to see a doctor

67. The main idea of this passage is that migrant workers _________.

A. lack cultural experiences

B. are not very well-paid in Beijing

C. are looked down upon by city people

D. need the government’s attention

D

　　　 The following are four kinds of medicine. How to use the medicine is very important. Never take some by mistake.

66. According the passage, which of the following is TRUE _________.

A. the workers enjoy reading very much, no matter how old the magazines are

B. the workers have so little to read that they often read the same magazine again and again

C. the workers enjoy magazines because they are easy to understand

D. the workers think highly of the copy of the magazine published in 1998

65. As for the migrant worker, Shen Jie, ____________.

A. life was harder when he first came to work in Beijing

B. he enjoyed a lot of films ten years ago

C. his wish was to pay for his son’s education

D. the capital is too hard a place for him to make any money